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Magnetic Polyolefin-based Nanocomposites

Published online by Cambridge University Press:  01 May 2013

Qingliang He,
Suying Wei and
Zhanhu Guo
Qingliang He
Affiliation:
Integrated Composites Laboratory (ICL), Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710 United States zhanhu.guo@lamar.edu
Suying Wei
Affiliation:
Department of Chemistry and Biochemistry, Lamar University, Beaumont, TX 77710
Zhanhu Guo
Affiliation:
Integrated Composites Laboratory (ICL), Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710 United States zhanhu.guo@lamar.edu
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Abstract

Magnetic polyolefin-based nanocomposites were fabricated through a facile one-pot thermal decomposition of organo-metallic precursor, i.e. Fe(CO)5 in polymer-solvent solution condition. The whole fabrication includes dissolution of polyolefin-based hosting matrix in refluxing organic solvent followed by the injection of metallic precursor to perform the in-situ thermal decomposition step. The particle sizes, morphology and dispersion quality of these in-situ synthesized magnetic nanoparticles were investigated by transmission electron microscopy (TEM). Room temperature mössbauer spectrum analysis was used to determine the species of these magnetic nanoparticles. Room temperature magnetic property investigation was utilized to further reveal the magnetic behaviors of these nanocomposites by specifying the saturation magnetization and coercive forces. Thermal gravimetric analysis (TGA) was used to determine the thermal stability of these as-prepared nanocomposites and the particle loadings. The formation mechanisms of these magnetic particles were proposed from the evidence of TEM observations and detailed evolutions are detailed as well.

Keywords

polymermagnetic propertiesnanostructure

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